Here's some stuff I've played on. It's really hard to put these samples in categories, but they're loosely organized by Blues, Wacky Ass Lounge, Country/Folk/Pop, Even New Age. A couple easy places to check out samples legally and free are Amazon and AllMusic. Some low quality video links at the bottom of the page.

BLUES:

John Mayall and the Bluesbreakers
It's all good, so it's hard to pick a favorite, but how many people can say they've played with Eric Clapton?
OK, lots, but at least I'm one of 'em, and it was definitely a highlight. He's sounding as good as ever on the 70th Birthday Concert disk 2, tracks 2 thru 6. Mick Taylor's awesome on disk 1, tracks 6 thru 9. The unsung Buddy Whittington sings on disk 1, tracks 1 and 2, and plays great throughout it all, as does the even more unsung Joe Yuele. And of course John and Tom Canning always sound great.
Mostly '62 reissue Fender Precision on "In the Palace of the King". Plywood upright with gut strings on track 13, King of the Kings. Probably used the 5 string jazz on the rockier tracks. Easy enough to tell if you don't have to listen on these crappy little computer speakers.
Lots of different basses on "Road Dogs". 2 different uprights. A plywood with gut strings, and a carved one with jazz strings. Also have the trusty Precision '62 reissue with D'addario chromes and the 5 string Fender Jazz.
On "Stories", I think it's all the '62 reissue Fender Precision.

Jean Paul Monsche
From demos I did with Jean Paul Monsche. He played piano and accordion and did the arrangements. And he did a great job as usual. The idea was to get some gigs for this groovy international lounge type thing. Don't know if it ever happened, but I got this great sounding CD out of it. That's my Kschier Brothers plywood upright bass with Spirocore strings and a Barbera pickup run direct into the board. Can't remember who all was on the session, but it's probably the usual cast of characters; Jay Work on reeds, Mike Sauer on drums, Tony Mandracchia on guitar and a bunch of other people I don't remember.
Recorded February 2002 at Pacifica Studios in Culver City, CA.

Jean Paul Monsche with Gia Ciambotti
More Jean Paul Monsche demos. This time with the immensely talented and really nice Gia Ciambotti singing. It's Jean Paul playing piano and arranging. Willie McNeil on drums and general grooviness. That's my 5-string Fender jazz bass with stock pickups before I put the Bartolini's in. Don't think I touched the low B string once. Once again the purpose is. . . . Get Gigs. Once again dunno. Once again I got a great sounding few songs on CD.
Recorded March 2002 at Joey Altruda's studio in Hollywood.

Friends of Dean Martinez:I can't remember which tracks I played on, and they decided to have no liner notes.
So. . . .
On "Retrograde", I'm pretty sure that's me on: 2. Lonesome, 3. Fresca, 8. Monte Carlo, and 11. I Will Wait for You. I used an old plywood bass with really dead steel strings.
I think I did 6 or 8 tracks, and whoever the original bass player was did the other ones.
For Wichita Lineman, I used a really beat up old Fender knockoff they had at the studio.
All the tracks were recorded August 1996 in Tucson.

Skip Heller: "St. Christopher's Arms"I'm playing electric and upright bass on about half of this. The multitalented
Skip Heller covers the rest of the bass parts. My favorites are tracks 5. Gee, Baby, Ain't I Good To You,
8. Waltz For Two Who Don't Dance, 11. Room to Room and 13. Teller.AmazonAllMusic

Anny Celsi: "Little Black Dress And Other Stories"
I'm a little out of my league on the pop stuff, but I think it came out pretty well. I got extra help on this from drummer, engineer and producer extraordinaire, Kevin Jarvis. You can buy this CD at
CD Baby.

Darenda Owens
Here's some MP3 excerpts of demos I did with fabulous country singer Darenda Owens. That's Mr. Everything Bobby Robles on guitar and Mr. Solid Chris Ross on drums. I'm playing the trusty '62 reissue P-bass with flatwound strings.
Recorded April 2004 at Barry Paul Studios in North Hollywood.